static pixman_image_t *
create_image (pixman_image_t **clone)
{
pixman_format_code_t format = RANDOM_ELT (formats);
pixman_image_t *image;
int width = prng_rand_n (MAX_WIDTH);
int height = prng_rand_n (MAX_HEIGHT);
int stride = ((width * (PIXMAN_FORMAT_BPP (format) / 8)) + 3) & ~3;
uint32_t *bytes = malloc (stride * height);
prng_randmemset (bytes, stride * height, RANDMEMSET_MORE_00_AND_FF);
image = pixman_image_create_bits (
format, width, height, bytes, stride);
pixman_image_set_destroy_function (image, free_bits, NULL);
assert (image);
if (clone)
{
uint32_t *bytes_dup = malloc (stride * height);
memcpy (bytes_dup, bytes, stride * height);
*clone = pixman_image_create_bits (
format, width, height, bytes_dup, stride);
pixman_image_set_destroy_function (*clone, free_bits, NULL);
}
return image;
}
static pixman_image_t *
load_jpeg(FILE *fp)
{
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
pixman_image_t *pixman_image = NULL;
unsigned int i;
int stride, first;
JSAMPLE *data, *rows[4];
jmp_buf env;
cinfo.err = jpeg_std_error(&jerr);
jerr.error_exit = error_exit;
cinfo.client_data = env;
if (setjmp(env))
return NULL;
jpeg_create_decompress(&cinfo);
jpeg_stdio_src(&cinfo, fp);
jpeg_read_header(&cinfo, TRUE);
cinfo.out_color_space = JCS_RGB;
jpeg_start_decompress(&cinfo);
stride = cinfo.output_width * 4;
data = malloc(stride * cinfo.output_height);
if (data == NULL) {
fprintf(stderr, "couldn't allocate image data\n");
return NULL;
}
while (cinfo.output_scanline < cinfo.output_height) {
first = cinfo.output_scanline;
for (i = 0; i < ARRAY_LENGTH(rows); i++)
rows[i] = data + (first + i) * stride;
jpeg_read_scanlines(&cinfo, rows, ARRAY_LENGTH(rows));
for (i = 0; first + i < cinfo.output_scanline; i++)
swizzle_row(rows[i], cinfo.output_width);
}
jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
pixman_image = pixman_image_create_bits(PIXMAN_a8r8g8b8,
cinfo.output_width,
cinfo.output_height,
(uint32_t *) data, stride);
pixman_image_set_destroy_function(pixman_image,
pixman_image_destroy_func, data);
return pixman_image;
}
static pixman_image_t *
make_image (pixman_format_code_t format)
{
uint32_t *bits;
uint8_t bpp = PIXMAN_FORMAT_BPP (format) / 8;
pixman_image_t *image;
bits = (uint32_t *)make_random_bytes (WIDTH * HEIGHT * bpp);
image = pixman_image_create_bits (format, WIDTH, HEIGHT, bits, WIDTH * bpp);
if (image && bits)
pixman_image_set_destroy_function (image, on_destroy, NULL);
return image;
}
static PixmanData *
pixman_image_add_data(pixman_image_t *image)
{
PixmanData *data;
data = (PixmanData *)pixman_image_get_destroy_data(image);
if (data == NULL) {
data = (PixmanData *)calloc(1, sizeof(PixmanData));
if (data == NULL) {
spice_error("out of memory");
}
pixman_image_set_destroy_function(image,
release_data,
data);
}
return data;
}
void PixmanBitmap::Init(int width, int height, void* data, int pitch, bool destroy) {
if (!pitch)
pitch = width * bytes();
bitmap = pixman_image_create_bits(pixman_format, width, height, (uint32_t*) data, pitch);
if (bitmap == NULL) {
Output::Error("Couldn't create %dx%d image.\n", width, height);
}
if (format.bits == 8) {
initialize_palette();
pixman_image_set_indexed(bitmap, &palette);
}
if (data != NULL && destroy)
pixman_image_set_destroy_function(bitmap, destroy_func, data);
}
static pixman_image_t *
make_image (void)
{
pixman_format_code_t format = RANDOM_FORMAT();
uint32_t *bytes = malloc (WIDTH * HEIGHT * 4);
pixman_image_t *image;
prng_randmemset (bytes, WIDTH * HEIGHT * 4, 0);
image = pixman_image_create_bits (
format, WIDTH, HEIGHT, bytes, WIDTH * 4);
pixman_image_set_transform (image, RANDOM_TRANSFORM());
pixman_image_set_destroy_function (image, on_destroy, bytes);
pixman_image_set_repeat (image, PIXMAN_REPEAT_NORMAL);
image_endian_swap (image);
return image;
}
/*
* Composite operation with pseudorandom images
*/
uint32_t
test_composite (int testnum,
int verbose)
{
int i;
pixman_image_t * src_img;
pixman_image_t * dst_img;
pixman_region16_t clip;
int dst_width, dst_height;
int dst_stride;
int dst_x, dst_y;
int dst_bpp;
pixman_op_t op;
uint32_t * dst_bits;
uint32_t crc32;
pixman_format_code_t mask_format, dst_format;
pixman_trapezoid_t *traps;
int src_x, src_y;
int n_traps;
static pixman_color_t colors[] =
{
{ 0xffff, 0xffff, 0xffff, 0xffff },
{ 0x0000, 0x0000, 0x0000, 0x0000 },
{ 0xabcd, 0xabcd, 0x0000, 0xabcd },
{ 0x0000, 0x0000, 0x0000, 0xffff },
{ 0x0101, 0x0101, 0x0101, 0x0101 },
{ 0x7777, 0x6666, 0x5555, 0x9999 },
};
FLOAT_REGS_CORRUPTION_DETECTOR_START ();
lcg_srand (testnum);
op = RANDOM_ELT (operators);
mask_format = RANDOM_ELT (mask_formats);
/* Create source image */
if (lcg_rand_n (4) == 0)
{
src_img = pixman_image_create_solid_fill (
&(colors[lcg_rand_n (ARRAY_LENGTH (colors))]));
src_x = 10;
src_y = 234;
}
else
{
pixman_format_code_t src_format = RANDOM_ELT(formats);
int src_bpp = (PIXMAN_FORMAT_BPP (src_format) + 7) / 8;
int src_width = lcg_rand_n (MAX_SRC_WIDTH) + 1;
int src_height = lcg_rand_n (MAX_SRC_HEIGHT) + 1;
int src_stride = src_width * src_bpp + lcg_rand_n (MAX_STRIDE) * src_bpp;
uint32_t *bits;
src_x = -(src_width / 4) + lcg_rand_n (src_width * 3 / 2);
src_y = -(src_height / 4) + lcg_rand_n (src_height * 3 / 2);
src_stride = (src_stride + 3) & ~3;
bits = (uint32_t *)make_random_bytes (src_stride * src_height);
src_img = pixman_image_create_bits (
src_format, src_width, src_height, bits, src_stride);
pixman_image_set_destroy_function (src_img, destroy_bits, bits);
if (lcg_rand_n (8) == 0)
{
pixman_box16_t clip_boxes[2];
int n = lcg_rand_n (2) + 1;
for (i = 0; i < n; i++)
{
clip_boxes[i].x1 = lcg_rand_n (src_width);
clip_boxes[i].y1 = lcg_rand_n (src_height);
clip_boxes[i].x2 =
clip_boxes[i].x1 + lcg_rand_n (src_width - clip_boxes[i].x1);
clip_boxes[i].y2 =
clip_boxes[i].y1 + lcg_rand_n (src_height - clip_boxes[i].y1);
if (verbose)
{
printf ("source clip box: [%d,%d-%d,%d]\n",
clip_boxes[i].x1, clip_boxes[i].y1,
clip_boxes[i].x2, clip_boxes[i].y2);
}
}
pixman_region_init_rects (&clip, clip_boxes, n);
pixman_image_set_clip_region (src_img, &clip);
pixman_image_set_source_clipping (src_img, 1);
pixman_region_fini (&clip);
}
image_endian_swap (src_img);
}
/* Create destination image */
{
dst_format = RANDOM_ELT(formats);
dst_bpp = (PIXMAN_FORMAT_BPP (dst_format) + 7) / 8;
dst_width = lcg_rand_n (MAX_DST_WIDTH) + 1;
dst_height = lcg_rand_n (MAX_DST_HEIGHT) + 1;
dst_stride = dst_width * dst_bpp + lcg_rand_n (MAX_STRIDE) * dst_bpp;
dst_stride = (dst_stride + 3) & ~3;
dst_bits = (uint32_t *)make_random_bytes (dst_stride * dst_height);
dst_x = -(dst_width / 4) + lcg_rand_n (dst_width * 3 / 2);
dst_y = -(dst_height / 4) + lcg_rand_n (dst_height * 3 / 2);
dst_img = pixman_image_create_bits (
dst_format, dst_width, dst_height, dst_bits, dst_stride);
image_endian_swap (dst_img);
}
/* Create traps */
{
int i;
n_traps = lcg_rand_n (25);
traps = fence_malloc (n_traps * sizeof (pixman_trapezoid_t));
for (i = 0; i < n_traps; ++i)
{
pixman_trapezoid_t *t = &(traps[i]);
t->top = random_fixed (MAX_DST_HEIGHT) - MAX_DST_HEIGHT / 2;
t->bottom = t->top + random_fixed (MAX_DST_HEIGHT);
t->left.p1.x = random_fixed (MAX_DST_WIDTH) - MAX_DST_WIDTH / 2;
t->left.p1.y = t->top - random_fixed (50);
t->left.p2.x = random_fixed (MAX_DST_WIDTH) - MAX_DST_WIDTH / 2;
t->left.p2.y = t->bottom + random_fixed (50);
t->right.p1.x = t->left.p1.x + random_fixed (MAX_DST_WIDTH);
t->right.p1.y = t->top - random_fixed (50);
t->right.p2.x = t->left.p2.x + random_fixed (MAX_DST_WIDTH);
t->right.p2.y = t->bottom - random_fixed (50);
}
}
if (lcg_rand_n (8) == 0)
{
pixman_box16_t clip_boxes[2];
int n = lcg_rand_n (2) + 1;
for (i = 0; i < n; i++)
{
clip_boxes[i].x1 = lcg_rand_n (dst_width);
clip_boxes[i].y1 = lcg_rand_n (dst_height);
clip_boxes[i].x2 =
clip_boxes[i].x1 + lcg_rand_n (dst_width - clip_boxes[i].x1);
clip_boxes[i].y2 =
clip_boxes[i].y1 + lcg_rand_n (dst_height - clip_boxes[i].y1);
if (verbose)
{
printf ("destination clip box: [%d,%d-%d,%d]\n",
clip_boxes[i].x1, clip_boxes[i].y1,
clip_boxes[i].x2, clip_boxes[i].y2);
}
}
pixman_region_init_rects (&clip, clip_boxes, n);
pixman_image_set_clip_region (dst_img, &clip);
pixman_region_fini (&clip);
}
pixman_composite_trapezoids (op, src_img, dst_img, mask_format,
src_x, src_y, dst_x, dst_y, n_traps, traps);
if (dst_format == PIXMAN_x8r8g8b8)
{
/* ignore unused part */
for (i = 0; i < dst_stride * dst_height / 4; i++)
dst_bits[i] &= 0xFFFFFF;
}
image_endian_swap (dst_img);
if (verbose)
{
int j;
for (i = 0; i < dst_height; i++)
{
for (j = 0; j < dst_stride; j++)
printf ("%02X ", *((uint8_t *)dst_bits + i * dst_stride + j));
printf ("\n");
}
}
crc32 = compute_crc32 (0, dst_bits, dst_stride * dst_height);
fence_free (dst_bits);
pixman_image_unref (src_img);
pixman_image_unref (dst_img);
fence_free (traps);
FLOAT_REGS_CORRUPTION_DETECTOR_FINISH ();
return crc32;
}
static cairo_surface_t *
_get_image (cairo_xcb_surface_t *surface,
cairo_bool_t use_shm,
int x, int y,
int width, int height)
{
cairo_surface_t *image;
cairo_xcb_connection_t *connection;
xcb_get_image_reply_t *reply;
cairo_int_status_t status;
assert (surface->fallback == NULL);
assert (x >= 0);
assert (y >= 0);
assert (x + width <= surface->width);
assert (y + height <= surface->height);
if (surface->deferred_clear) {
image =
_cairo_image_surface_create_with_pixman_format (NULL,
surface->pixman_format,
width, height,
0);
if (surface->deferred_clear_color.alpha_short > 0x00ff) {
cairo_solid_pattern_t solid;
_cairo_pattern_init_solid (&solid, &surface->deferred_clear_color);
status = _cairo_surface_paint (image,
CAIRO_OPERATOR_SOURCE,
&solid.base,
NULL);
if (unlikely (status)) {
cairo_surface_destroy (image);
image = _cairo_surface_create_in_error (status);
}
}
return image;
}
connection = surface->connection;
status = _cairo_xcb_connection_acquire (connection);
if (unlikely (status))
return _cairo_surface_create_in_error (status);
if (use_shm) {
image = _get_shm_image (surface, x, y, width, height);
if (image) {
if (image->status) {
_cairo_xcb_connection_release (connection);
return image;
}
cairo_surface_destroy (image);
}
}
status = _cairo_xcb_connection_get_image (connection,
surface->drawable,
x, y,
width, height,
&reply);
if (unlikely (status))
goto FAIL;
if (reply == NULL && ! surface->owns_pixmap) {
/* xcb_get_image_t from a window is dangerous because it can
* produce errors if the window is unmapped or partially
* outside the screen. We could check for errors and
* retry, but to keep things simple, we just create a
* temporary pixmap
*
* If we hit this fallback too often, we should remember so and
* skip the round-trip from the above GetImage request,
* similar to what cairo-xlib does.
*/
xcb_pixmap_t pixmap;
xcb_gcontext_t gc;
gc = _cairo_xcb_screen_get_gc (surface->screen,
surface->drawable,
surface->depth);
pixmap = _cairo_xcb_connection_create_pixmap (connection,
surface->depth,
surface->drawable,
width, height);
/* XXX IncludeInferiors? */
_cairo_xcb_connection_copy_area (connection,
surface->drawable,
pixmap, gc,
x, y,
0, 0,
width, height);
_cairo_xcb_screen_put_gc (surface->screen, surface->depth, gc);
status = _cairo_xcb_connection_get_image (connection,
pixmap,
0, 0,
width, height,
&reply);
_cairo_xcb_connection_free_pixmap (connection, pixmap);
if (unlikely (status))
goto FAIL;
}
if (unlikely (reply == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto FAIL;
}
/* XXX byte swap */
/* XXX format conversion */
assert (reply->depth == surface->depth);
image = _cairo_image_surface_create_with_pixman_format
(xcb_get_image_data (reply),
surface->pixman_format,
width, height,
CAIRO_STRIDE_FOR_WIDTH_BPP (width,
PIXMAN_FORMAT_BPP (surface->pixman_format)));
status = image->status;
if (unlikely (status)) {
free (reply);
goto FAIL;
}
/* XXX */
pixman_image_set_destroy_function (((cairo_image_surface_t *)image)->pixman_image, _destroy_image, reply);
_cairo_xcb_connection_release (connection);
return image;
FAIL:
_cairo_xcb_connection_release (connection);
return _cairo_surface_create_in_error (status);
}
static pixman_image_t *
load_png(FILE *fp)
{
png_struct *png;
png_info *info;
png_byte *data = NULL;
png_byte **row_pointers = NULL;
png_uint_32 width, height;
int depth, color_type, interlace, stride;
unsigned int i;
pixman_image_t *pixman_image = NULL;
png = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL,
png_error_callback, NULL);
if (!png)
return NULL;
info = png_create_info_struct(png);
if (!info) {
png_destroy_read_struct(&png, &info, NULL);
return NULL;
}
if (setjmp(png_jmpbuf(png))) {
if (data)
free(data);
if (row_pointers)
free(row_pointers);
png_destroy_read_struct(&png, &info, NULL);
return NULL;
}
png_set_read_fn(png, fp, read_func);
png_read_info(png, info);
png_get_IHDR(png, info,
&width, &height, &depth,
&color_type, &interlace, NULL, NULL);
if (color_type == PNG_COLOR_TYPE_PALETTE)
png_set_palette_to_rgb(png);
if (color_type == PNG_COLOR_TYPE_GRAY)
png_set_expand_gray_1_2_4_to_8(png);
if (png_get_valid(png, info, PNG_INFO_tRNS))
png_set_tRNS_to_alpha(png);
if (depth == 16)
png_set_strip_16(png);
if (depth < 8)
png_set_packing(png);
if (color_type == PNG_COLOR_TYPE_GRAY ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
png_set_gray_to_rgb(png);
if (interlace != PNG_INTERLACE_NONE)
png_set_interlace_handling(png);
png_set_filler(png, 0xff, PNG_FILLER_AFTER);
png_set_read_user_transform_fn(png, premultiply_data);
png_read_update_info(png, info);
png_get_IHDR(png, info,
&width, &height, &depth,
&color_type, &interlace, NULL, NULL);
stride = stride_for_width(width);
data = malloc(stride * height);
if (!data) {
png_destroy_read_struct(&png, &info, NULL);
return NULL;
}
row_pointers = malloc(height * sizeof row_pointers[0]);
if (row_pointers == NULL) {
free(data);
png_destroy_read_struct(&png, &info, NULL);
return NULL;
}
for (i = 0; i < height; i++)
row_pointers[i] = &data[i * stride];
png_read_image(png, row_pointers);
png_read_end(png, info);
free(row_pointers);
png_destroy_read_struct(&png, &info, NULL);
pixman_image = pixman_image_create_bits(PIXMAN_a8r8g8b8,
width, height, (uint32_t *) data, stride);
pixman_image_set_destroy_function(pixman_image,
pixman_image_destroy_func, data);
return pixman_image;
}
static void
set_image_properties(pixman_image_t * image, PicturePtr pict, Bool has_clip,
int *xoff, int *yoff, Bool is_alpha_map)
{
pixman_repeat_t repeat;
pixman_filter_t filter;
if (pict->transform) {
/* For source images, adjust the transform to account
* for the drawable offset within the pixman image,
* then set the offset to 0 as it will be used
* to compute positions within the transformed image.
*/
if (!has_clip) {
struct pixman_transform adjusted;
adjusted = *pict->transform;
pixman_transform_translate(&adjusted,
NULL,
pixman_int_to_fixed(*xoff),
pixman_int_to_fixed(*yoff));
pixman_image_set_transform(image, &adjusted);
*xoff = 0;
*yoff = 0;
}
else
pixman_image_set_transform(image, pict->transform);
}
switch (pict->repeatType) {
default:
case RepeatNone:
repeat = PIXMAN_REPEAT_NONE;
break;
case RepeatPad:
repeat = PIXMAN_REPEAT_PAD;
break;
case RepeatNormal:
repeat = PIXMAN_REPEAT_NORMAL;
break;
case RepeatReflect:
repeat = PIXMAN_REPEAT_REFLECT;
break;
}
pixman_image_set_repeat(image, repeat);
/* Fetch alpha map unless 'pict' is being used
* as the alpha map for this operation
*/
if (pict->alphaMap && !is_alpha_map) {
int alpha_xoff, alpha_yoff;
pixman_image_t *alpha_map =
image_from_pict_internal(pict->alphaMap, FALSE, &alpha_xoff,
&alpha_yoff, TRUE);
pixman_image_set_alpha_map(image, alpha_map, pict->alphaOrigin.x,
pict->alphaOrigin.y);
free_pixman_pict(pict->alphaMap, alpha_map);
}
pixman_image_set_component_alpha(image, pict->componentAlpha);
switch (pict->filter) {
default:
case PictFilterNearest:
case PictFilterFast:
filter = PIXMAN_FILTER_NEAREST;
break;
case PictFilterBilinear:
case PictFilterGood:
filter = PIXMAN_FILTER_BILINEAR;
break;
case PictFilterConvolution:
filter = PIXMAN_FILTER_CONVOLUTION;
break;
}
if (pict->pDrawable)
pixman_image_set_destroy_function(image, &image_destroy,
pict->pDrawable);
pixman_image_set_filter(image, filter,
(pixman_fixed_t *) pict->filter_params,
pict->filter_nparams);
pixman_image_set_source_clipping(image, TRUE);
}
static cairo_status_t
_get_image (cairo_xcb_surface_t *surface,
cairo_bool_t use_shm,
cairo_image_surface_t **image_out)
{
cairo_image_surface_t *image;
cairo_xcb_connection_t *connection;
xcb_get_image_reply_t *reply;
cairo_status_t status;
if (surface->base.is_clear || surface->deferred_clear) {
image = (cairo_image_surface_t *)
_cairo_image_surface_create_with_pixman_format (NULL,
surface->pixman_format,
surface->width,
surface->height,
0);
*image_out = image;
return image->base.status;
}
connection = surface->connection;
status = _cairo_xcb_connection_acquire (connection);
if (unlikely (status))
return status;
status = _cairo_xcb_connection_take_socket (connection);
if (unlikely (status))
goto FAIL;
if (use_shm) {
status = _get_shm_image (surface, image_out);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
goto FAIL;
}
if (surface->use_pixmap == 0) {
status = _cairo_xcb_connection_get_image (connection,
surface->drawable,
0, 0,
surface->width,
surface->height,
&reply);
if (unlikely (status))
goto FAIL;
} else {
surface->use_pixmap--;
reply = NULL;
}
if (reply == NULL && ! surface->owns_pixmap) {
/* xcb_get_image_t from a window is dangerous because it can
* produce errors if the window is unmapped or partially
* outside the screen. We could check for errors and
* retry, but to keep things simple, we just create a
* temporary pixmap
*/
xcb_pixmap_t pixmap;
xcb_gcontext_t gc;
gc = _cairo_xcb_screen_get_gc (surface->screen,
surface->drawable,
surface->depth);
pixmap = _cairo_xcb_connection_create_pixmap (connection,
surface->depth,
surface->drawable,
surface->width,
surface->height);
/* XXX IncludeInferiors? */
_cairo_xcb_connection_copy_area (connection,
surface->drawable,
pixmap, gc,
0, 0,
0, 0,
surface->width,
surface->height);
_cairo_xcb_screen_put_gc (surface->screen, surface->depth, gc);
status = _cairo_xcb_connection_get_image (connection,
pixmap,
0, 0,
surface->width,
surface->height,
&reply);
_cairo_xcb_connection_free_pixmap (connection, pixmap);
if (unlikely (status))
goto FAIL;
}
if (unlikely (reply == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto FAIL;
}
/* XXX byte swap */
/* XXX format conversion */
assert (reply->depth == surface->depth);
image = (cairo_image_surface_t *)
_cairo_image_surface_create_with_pixman_format
(xcb_get_image_data (reply),
surface->pixman_format,
surface->width,
surface->height,
CAIRO_STRIDE_FOR_WIDTH_BPP (surface->width,
PIXMAN_FORMAT_BPP (surface->pixman_format)));
status = image->base.status;
if (unlikely (status)) {
free (reply);
goto FAIL;
}
assert (xcb_get_image_data_length (reply) == image->height * image->stride);
pixman_image_set_destroy_function (image->pixman_image, _destroy_image, reply);
_cairo_xcb_connection_release (connection);
/* synchronisation point */
surface->marked_dirty = FALSE;
*image_out = image;
return CAIRO_STATUS_SUCCESS;
FAIL:
_cairo_xcb_connection_release (connection);
return status;
}
static pixman_image_t *
create_image (int max_size, const pixman_format_code_t *formats, uint32_t flags)
{
int width, height;
pixman_image_t *image;
pixman_format_code_t format;
uint32_t *data;
int bpp;
int stride;
int i;
pixman_image_destroy_func_t destroy;
if ((flags & ALLOW_SOLID) && lcg_rand_n (4) == 0)
{
pixman_color_t color;
color.alpha = lcg_rand_u32();
color.red = lcg_rand_u32();
color.green = lcg_rand_u32();
color.blue = lcg_rand_u32();
return pixman_image_create_solid_fill (&color);
}
width = lcg_rand_n (max_size) + 1;
height = lcg_rand_n (max_size) + 1;
format = random_format (formats);
bpp = PIXMAN_FORMAT_BPP (format);
stride = (width * bpp + 7) / 8 + lcg_rand_n (17);
stride = (stride + 3) & ~3;
if (lcg_rand_n (64) == 0)
{
if (!(data = (uint32_t *)make_random_bytes (stride * height)))
{
fprintf (stderr, "Out of memory\n");
abort ();
}
destroy = destroy_fenced;
}
else
{
uint8_t *d8;
data = malloc (stride * height);
d8 = (uint8_t *)data;
for (i = 0; i < height * stride; ++i)
d8[i] = lcg_rand_n (256);
destroy = destroy_malloced;
}
image = pixman_image_create_bits (format, width, height, data, stride);
pixman_image_set_destroy_function (image, destroy, data);
if ((flags & ALLOW_CLIPPED) && lcg_rand_n (8) == 0)
{
pixman_box16_t clip_boxes[8];
pixman_region16_t clip;
int n = lcg_rand_n (8) + 1;
for (i = 0; i < n; i++)
{
clip_boxes[i].x1 = lcg_rand_n (width);
clip_boxes[i].y1 = lcg_rand_n (height);
clip_boxes[i].x2 =
clip_boxes[i].x1 + lcg_rand_n (width - clip_boxes[i].x1);
clip_boxes[i].y2 =
clip_boxes[i].y1 + lcg_rand_n (height - clip_boxes[i].y1);
}
pixman_region_init_rects (&clip, clip_boxes, n);
pixman_image_set_clip_region (image, &clip);
pixman_region_fini (&clip);
}
if ((flags & ALLOW_SOURCE_CLIPPING) && lcg_rand_n (4) == 0)
{
pixman_image_set_source_clipping (image, TRUE);
pixman_image_set_has_client_clip (image, TRUE);
}
if ((flags & ALLOW_ALPHA_MAP) && lcg_rand_n (16) == 0)
{
pixman_image_t *alpha_map;
int alpha_x, alpha_y;
alpha_x = lcg_rand_n (width);
alpha_y = lcg_rand_n (height);
alpha_map =
create_image (max_size, formats, (flags & ~(ALLOW_ALPHA_MAP | ALLOW_SOLID)));
pixman_image_set_alpha_map (image, alpha_map, alpha_x, alpha_y);
pixman_image_unref (alpha_map);
}
if ((flags & ALLOW_REPEAT) && lcg_rand_n (2) == 0)
pixman_image_set_repeat (image, lcg_rand_n (4));
image_endian_swap (image);
return image;
}
